961 results about "Polymer particle" patented technology

The invention provides a diaphragm adhesive composition, a diaphragm and a lithium ion battery, the solid content of the diaphragm adhesive composition is 10-40wt%, and when the solid content of the diaphragm adhesive composition is diluted to 5wt%, the surface tension of a diluent is not less than 28mN / m; the diaphragm adhesive composition comprises polymer particles A and a polymer adhesive B, wherein the solid mass ratio of the polymer particles A to the polymer adhesive B is 100: (3-30); the particle size of the polymer particles A is 0.2-10 [mu] m, and the glass transition temperature of the polymer particles A is 30-90 DEG C; and the polymer adhesive B is a water-based emulsion type adhesive, the particle size of polymer particles contained in the polymer adhesive B is 0.1-1 mu m, and the glass transition temperature of the polymer adhesive B is-50-20 DEG C. The diaphragm adhesive composition disclosed by the invention is not easy to spread on a base material, can prevent an adhesive glue solution from being quickly diffused on the surface of a diaphragm, forms controllable, uniform-size and uniformly-distributed adhesive coating points on the surface of the base material, and has small influence on the air permeability of the diaphragm.

A process is provided for transferring a product from a first polymerization zone (101) to a second polymerization zone (301) arranged in series with the first polymerization zone (101). The process comprises: discharging a product of the first polymerization zone (101) from the first polymerization zone (101); separating the product into a gas phase comprising any unreacted monomer and gaseous agent used in the first polymerization zone (101), and a solid phase comprising a polymerization product; and transferring the solid phase to the second polymerization zone (301) via at least one of a first transfer vessel (202) and a second transfer vessel (203) arranged in parallel to each other and in selective communication with each other, wherein the at least one of the first transfer vessel (202) and second transfer vessel (203) is further in selective communication with the second polymerization zone (301), and the second polymerization zone (301) is a gas-phase polymerization zone.

The invention relates to an epoxy core-shell polymer particle and resin, a preparation method of the epoxy core-shell polymer particle and resin and application of the epoxy core-shell polymer particle and resin to epoxy resin. The preparation method of the epoxy core-shell polymer particle comprises the following steps: heating and mixing a polybutadiene seed emulsion, a reducing agent, an emulsifier and the like; adding methyl methacrylate and an initiator, and glycidyl methacrylate and an initiator, and heating to react; compared with the prior art, the core-shell particle with the outer layer of the synthesized shell containing the epoxy group can be used for toughening the epoxy resin, so that the toughness of the epoxy resin is effectively improved while the excellent heat resistance and mechanical properties of the epoxy resin are maintained.

The invention discloses a coated reflecting film based on an organic fluorescent coating and a preparation method of the coated reflecting film, tetra (4-aminophenyl) methane and tetra-(4-formyl-(1, 1-biphenyl)) ethylene are used as reaction monomers to prepare a novel topological structure [4 + 4] COF (3D-TPE-COF) with a tetraphenylethylene (TPE) unit, and the novel topological structure [4 + 4] COF (3D-TPE-COF) is used for preparing the reflective film based on the organic fluorescent coating. The covalent organic framework material 3D-TPE-COF is added into coating liquid as a fluorescent material to prepare a coating reflecting film based on an organic fluorescent coating, and the obtained reflecting film can convert high-energy blue light, so that the brightness of light emitted by a backlight module is higher and closer to white; meanwhile, the 3D-TPE-COF fluorescent material and the polymer particles can form hydrogen bonds in the coating liquid to avoid aggregation of the polymer particles, so that the wear resistance and scratch resistance of the coating reflecting film are improved.

The invention discloses an interface modification material with a high failure threshold, a solid electrolyte and an all-solid-state battery, and relates to the technical field of electrochemistry. The interface modification material comprises a lithium salt, polymer particles, nanometer indium oxide particles and nanometer NASICON type solid electrolyte powder, the solid electrolyte is obtained by modifying the NASICON type solid electrolyte through the interface modification material, and the all-solid-state battery can be prepared through the solid electrolyte. According to the interface modification material, the cycle performance of the all-solid-state battery at room temperature can be improved, and meanwhile, the interface critical failure threshold can be increased.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

Membranes and related systems and methods for separation of components in liquids are generally described. The membrane may include particles in a polymer matrix (e.g., a polyamide layer). The particles may include metal-organic framework particles comprising functional groups (e.g., from post-synthetic modification) that can, in some instances, improve the rejection and / or selectivity of the membrane. For example, the metal-organic framework may comprise functional groups bound to hydrophobic groups (e.g., alkyl chains) that assist with suspension stability in nonpolar solvents during membrane fabrication. As another example, the metal-organic framework may comprise functional groups bound to crosslinking agents that facilitate in situ crosslinking of the particles with the polymer matrix, thereby reducing voids in the membrane and / or leaching. In some instances, the membrane is a thin-film nanocomposite membrane (e.g., for separating components like charged species and / or neutral species) formed via, for example, interfacial polymerization in the presence of the particles.

A shoe or other footwear has a non-removable multi-layer foot-support member (FSM) embedded within the sole. The uppermost layer is a breathable, stretchable textile configured for direct contact with the foot, offering softness and elasticity. Directly beneath it is a containment layer made of elastic fabric partially infused or impregnated with silicone, which stabilizes and restrains the granular contents below. The central layer includes one or two or three sealed chambers filled with a cured mixture of silicone and polymeric granules, forming a deformable medium that yields under pressure and mimics natural granular terrain or sand. Beneath this is a synthetic textile layer that restricts lateral expansion of the granular mixture, and preserves chamber geometry during use. The bottom component is a semi-rigid base that structurally supports and anchors all overlying layers.

A method of three-dimensional printing can include iteratively applying a polymer build material as individual layers to a powder bed, where the polymer build material includes from about 80 wt % to 100 wt % polymeric particles, and based on a three-dimensional object model, selectively applying a coalescing agent onto individual layers of the polymer build material. The coalescing agent can include an aqueous liquid vehicle and a coalescing solvent that depresses a melting point of the polymeric particles. The method can include exposing the powder bed to heat to selectively coalesce portions of individual layers of the polymer build material in contact with the coalescing solvent. The heat may not be sufficient to coalesce the polymer build material that is not in contact with the coalescing solvent and may be sufficient to fuse the polymeric particles in contact with the coalescing solvent together to form a three-dimensional object.

The invention relates to the technical field of batteries, in particular to a battery diaphragm, a preparation method thereof and a secondary battery. The battery diaphragm comprises a base membrane and a coating arranged on at least one side surface of the base membrane, the coating comprises non-fluorine polymer particles and silane coupling agent modified inorganic filler particles, and the surface density of the coating is 1.5-2.5 g / m < 2 >; the mass ratio of the non-fluorine polymer particles in the coating is 10%-25%; the non-fluorine polymer particles are secondary agglomerated particles formed by agglomerating primary particles, and the D50 particle size of the primary particles is 0.4-0.6 mu m; the secondary agglomerated particles meet the condition that (D90-D10) / D50 is less than 1.3; the glass transition temperature Tg of the secondary agglomerated particles is-5 to 5 DEG C. The battery diaphragm disclosed by the invention has excellent heat resistance and adhesion with a pole piece, and the secondary battery adopting the battery diaphragm disclosed by the invention has more excellent cycle performance.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

The invention provides a non-fluoropolymer, a non-fluoropolymer composite diaphragm and application, the non-fluoropolymer comprises a polymer A and a polymer B at least partially coating the surface of the polymer A, the crosslinking degree of the polymer A is X1, the crosslinking degree of the polymer B is X2, 5% < = X1 < = 10%, and 50% < = X2 < = 60%; the non-fluorine polymer composite diaphragm comprises a base membrane and a coating layer coated on at least one side of the base membrane. The non-fluorine polymer particles have high swelling rate at high temperature and reversible characteristics of absorbing and releasing electrolyte, when the non-fluorine polymer and the non-fluorine polymer composite diaphragm are applied to a battery cell, when the battery cell is heated abnormally, the non-fluorine polymer swells at high speed and blocks an ion shuttle channel, further temperature deterioration is avoided, and the service life of the battery cell is prolonged. Meanwhile, when the temperature returns to normal, the non-fluorine polymer particles can recover to the original morphology and recover an ion shuttle channel, so that the subsequent cycle performance of the battery cell is not influenced.

The utility model relates to the technical field of batteries, and discloses a diaphragm of a battery cell, the battery cell and a battery pack. The separator includes a base film and a hybrid coating. The mixed coating is coated on a single surface or double surfaces of the base film; the mixed coating comprises a heat-resistant material and polymer particles, the particle size of the polymer particles is larger than that of the heat-resistant material, the polymer particles at least partially protrude out of the heat-resistant material to form supporting protrusions, and the supporting protrusions are suitable for forming a gap between the diaphragm and the pole piece after the diaphragm and the pole piece are laminated. According to the diaphragm of the battery cell provided by the utility model, the electrolyte infiltration effect of the pole piece can be improved. And meanwhile, the polymer particles have relatively strong electrolyte absorption performance, can absorb and store part of electrolyte, are beneficial to infiltration of a battery cell pole piece, and continuously release the electrolyte in the cycle process of the lithium battery cell for supplementing the electrolyte consumed by the pole piece, so that the cycle life of the battery cell is prolonged.

The invention discloses a polymer foamed sheet as well as a preparation method and application thereof, and relates to the technical field of foamed materials. According to the preparation method of the polymer foamed sheet provided by the invention, firstly, the polymer particles with specific morphology are mixed, hot pressed and sintered to obtain the sheet with certain porosity, and then the sheet is foamed and sintered to form pores in the sheet, so that diffusion of supercritical fluid is accelerated; according to the preparation method, rapid and efficient preparation of the polymer foamed board can be achieved, the obtained foamed polymer board has abundant foam holes with high uniformity in size and distribution, the foaming ratio can reach 8.3 times or above, the density is low, the light weight characteristic is excellent, the large-scale application prospect is achieved, meanwhile, the good heat insulation characteristic is achieved, and the application prospect is wide. The heat conductivity coefficient is not higher than 0.09 W m <-1 > K <-1 >.

An external additive for toner, wherein the external additive is an organosilicon polymer particle, and defining A (nm) as the number-average particle diameter of primary particles of the external additive measured using a scanning electron microscope, and defining B (nm) as the number-average particle diameter of the external additive measured in accordance with a centrifugal sedimentation method, the A and the B satisfy a following Expression (1):1.5≤B / A≤3.0  (1).

The invention discloses a diaphragm and a secondary battery, and belongs to the field of batteries. According to the diaphragm, a functional coating containing polymer particles with two sizes and glass transition temperatures as key components is arranged on an organic substrate, and meanwhile, the size gradient of the polymer particles and the porosity of the diaphragm are correspondingly adjusted; when the electrolyte is applied to a winding type secondary battery, ideal electrolyte absorption and retention effects can be realized, and meanwhile, the lithium precipitation condition at the corner bending part of the secondary battery can be effectively inhibited.

The invention belongs to the technical field of processing aids, and relates to a production method of a PVC (polyvinyl chloride) foaming regulator, which comprises the following steps: preparing deionized water and a compound emulsifier into emulsion; adding butyl acrylate, ethyl acrylate, methyl methacrylate and modified nano calcium carbonate to prepare a pre-emulsion; adding part of the pre-emulsion and an initiator into the emulsion, and supplementing the initiator after a period of time to obtain a seed polymerization solution; uniformly mixing the residual pre-emulsion with a chain transfer agent, dropwise adding the mixture into the seed polymerization liquid, and preserving heat; adding a demulsifier, and performing vacuum drying to obtain polymer particles; and uniformly mixing a calcium-zinc stabilizer, calcium stearate and the polymer particles, heating, adding oxidized polyethylene wax, dispersing at a high speed, and cooling to obtain the PVC foaming regulator. Through material modification, polymerization process optimization and the synergistic effect of compounded components, the defects of a traditional PVC foaming regulator in the aspects of stability, melt strength, lubrication balance and dispersity are systematically overcome.

Disclosed are a separator for a secondary battery, and a secondary battery including the same, the separator including a porous substrate, an inorganic layer located on at least one side of the porous substrate, and an adhesive layer located on the inorganic layer, wherein the adhesive layer includes first vinylidene fluoride-based polymer particles and second vinylidene fluoride-based polymer particles, having different solation temperatures.

The present application provides a separator, an electrochemical device and an electronic device. The separator comprises a base material, and an inorganic coating and a bonding layer that are arranged on one surface of the base material; the inorganic coating is arranged between the base material and the bonding layer; the binding layer is arranged on the other surface of the base material; the bonding layer comprises polymer particles, and the average particle size of the polymer particles is Dv50 μm; and the surface of the inorganic coating is provided with a plurality of pits, the depth of each pit is C μm, and C and Dv50 meet the following conditions: 0.25≤C / Dv50≤4 and 0.5≤C≤2. When the separator is applied to the electrochemical device, the internal resistance of the electrochemical device can be reduced, improving the temperature conversion coefficient of the electrochemical device.

An external additive for toner comprising a particle of a silicon polymer having a siloxane bond and a Si—O—C bond, wherein in an FT-IR spectrum of the external additive obtained by an ATR method, a maximum peak is present in a range of from 1030 cm−1 to 1070 cm−1, where an average intensity in a range of from 1015 cm−1 to 1025 cm−1 of the spectrum is denoted by A and an average intensity in a range of from 1085 cm−1 to 1095 cm−1 is denoted by B, the A and the B satisfy a following formula (1):0.5⁢5≤A / B≤1.5.(1)

Provided is a toner comprising: a toner particle containing a binder resin; and an organic silicon polymer particle on a surface of the toner particle, wherein the binder resin contains a crystalline resin, and when the toner particle is pelletized and a Young's modulus of the toner measured in a micro compression test at 25° C. is represented by TE (MPa) and when one organic silicon polymer particle is separated from the toner and a Young's modulus of the one organic silicon polymer particle measured in a micro compression test at 25° C. is represented by SiE (MPa), TE and SiE satisfies 800≤TE≤2500 and 1.5≤SiE / TE≤10.0.

The application discloses large-diameter core-shell polymer particles, a preparation method and application thereof. The large-diameter core-shell polymer particles have a particle size of 1-50 microns; the structure of the particles comprises a water-insoluble soft substance layer and a hard substance layer, and the weight ratio of the soft substance layer to the hard substance layer is 1:0.1-10, and the hard substance layer is located at the outer layer of the soft substance layer. The particles are prepared by using a modified aqueous suspension polymerization and / or emulsion polymerization method. The obtained particles can improve the hardness of an electric core, inhibit the deformation of the electric core, and do not affect the air permeability. Compared with general micron-level homogeneous polymer particles, the particles provided by the application have a soft core and hard shell structure, which is also beneficial to improving the performance of a diaphragm. The hard substance layer located at the outer layer of the particles ensures that the diaphragm coating is not sticky after drying, so that the diaphragms are not adhered to each other after being wound. The soft substance layer located at the inner layer of the particles can provide strong adhesion, so that the diaphragm and the pole piece have higher peeling strength.

The invention discloses a bio-based polymer emulsion as well as a preparation method and application thereof, and belongs to the technical field of aqueous polymer emulsions. The emulsion comprises an aqueous continuous phase, bio-based polymer particles, a stabilizing system, and a bionic catechol adhesion component. Specific modified starch is innovatively utilized for assistance, and a bionic adhesion shell layer is constructed on the surface of a bio-based polymer core in situ. Compared with similar products in the market that adhesion to inert substrates can be improved only by adding a large amount of tackifying components, the scheme has the advantages that excellent dry and wet adhesion can be realized on the surfaces of difficult-to-adhere substrates such as polypropylene and polyethylene only by constructing an extremely thin interface functional layer, and the functionalization efficiency and economical efficiency of the bio-based material are greatly improved. Meanwhile, the system effectively overcomes the industrial problem that the high-solid-content emulsion is easy to settle, has excellent storage stability and construction adaptability, and conforms to the development trend of sustainable barrier packaging and high-performance water-based coatings in the future.

The invention relates to the technical field of batteries, in particular to a composite diaphragm, a preparation method thereof and a secondary battery. The composite diaphragm comprises a base membrane, a first coating arranged on the surface of at least one side of the base membrane and a second coating arranged on at least part of the surface of the first coating, the first coating comprises filler particles and composite particles, the filler particles are stacked to form a filler layer, and the composite particles are embedded into the filler layer and form protrusions on the surface of the filler layer; the composite particles comprise primary particles of a first polymer and secondary particles formed by co-agglomeration of ceramics; the second coating comprises polymer particles; the polymer particles comprise second polymer primary particles; the height h of the composite particles protruding out of the second coating on the filler layer satisfies 1 [mu] m < = h < = 4.9 [mu] m. The diaphragm and an electrode plate are good in adhesion, enough space is provided for storage of electrolyte, ion conduction is not affected, lithium separation of the battery is not prone to occurring, and the cycle performance and the energy density of the battery are improved.

A three-dimensional printing kit can include a build material with from about 80 wt % to 100 wt % polymeric particles having a D50 particle size from about 10 μm to about 150 μm, and a fusing agent including from about 0.5 wt % to about 20 wt % avobenzone particles dispersed in an aqueous liquid vehicle based on a total weight of the fusing agent.

The invention relates to the technical field of battery diaphragms, and particularly discloses gluing slurry, a battery diaphragm and a battery applying the gluing slurry, the battery diaphragm is composed of a ceramic or solid electrolyte base membrane and a cross-linking functional coating on the base membrane, the cross-linking functional coating is formed by dispensing or coating the gluing slurry on the ceramic or solid electrolyte base membrane and drying, and the ceramic or solid electrolyte base membrane is coated with the cross-linking functional coating. The salinized polymer and the flexible polymer in the gluing slurry form a cross-linked network under the action of the cross-linking agent and are subjected to secondary cross-linking on the surface of the particle polymer to form uniformly dispersed polymer particles with controllable size and morphology, so that the battery diaphragm can be ensured to have the properties of good ionic conductivity, liquid absorption and retention capability, bonding force and the like, the structure is stable, and the service life of the battery diaphragm is prolonged. And the diaphragm can stably exist on the surface of the diaphragm.

Filled polyols and processes for their production. The filled polyols include a carrier polyol and polymer particles dispersed in the carrier polyol. The carrier polyol includes a polyether polyol having a functionality of 2 to 6, an OH number of 20 to 120 mg KOH / g, and a poly(oxyethylene) content of at least 60% by weight, based on total weight of the polyether polyol. The polymer particles exhibit a multimodal particle size distribution.

The invention discloses a cold-pressed high-adhesion non-fluoropolymer, a coated diaphragm and a preparation method of the coated diaphragm, the cold-pressed high-adhesion non-fluoropolymer comprises non-fluoropolymer particles, the glass transition temperature of the non-fluoropolymer particles is-10 DEG C to 10 DEG C, the non-fluoropolymer particles are provided with inner cores and outer shells, the inner cores are provided with polymers A, the outer shells are provided with polymers B, and the polymers B are arranged in the outer shells. The polymer A and the polymer B are both formed by polymerizing a component C and a component D, the mass ratio of the component C in the polymer A is 85%-95%, and the mass ratio of the component C in the polymer B is 20%-30%; the coated diaphragm comprises a base diaphragm and a coating with a cold-pressed high-adhesion non-fluoropolymer, and the preparation method of the coated diaphragm comprises the following steps: firstly preparing a non-fluoropolymer particle emulsion, then preparing coating slurry, and then preparing the diaphragm. The coated diaphragm and an electrode plate have relatively strong adhesion in a cold-pressed mode (the temperature is 25-45 DEG C); and the cold pressing requirements of diaphragms and electrode plates can be met.

The invention discloses an anisotropic Pickering emulsion, a preparation method of the anisotropic Pickering emulsion, polymer particles and a preparation method of the polymer particles, and relates to a method for preparing the anisotropic Pickering emulsion by utilizing a membrane emulsification technology and nano particle-polymer interface electrostatic co-assembly and further preparing the anisotropic polymer particles by taking the Pickering emulsion as a template. The method is simple, efficient, green and environmentally friendly, the shape and size of the prepared anisotropic particles are controllable, mass production can be achieved, and the method has wide application prospects in the fields of catalysis, separation, optics and the like.